set regular=C:\Users\Admin\Documents\My Games\Spring\Engines\spring_94.1_minimal-portable\buildicons\ImageMagick-6.8.7-0\Regular\
set white=C:\Users\Admin\Documents\My Games\Spring\Engines\spring_94.1_minimal-portable\buildicons\ImageMagick-6.8.7-0\White\
set overlay=C:\Users\Admin\Documents\My Games\Spring\Engines\spring_94.1_minimal-portable\buildicons\ImageMagick-6.8.7-0\Overlays\
for %%a in ("%regular%"*) do convert "%%a" "%white%%%~nxa" -compose minus -composite "%overlay%%%~nxa"